AirHint found the following cheapest return flights from Denver (DEN) to Madrid (MAD) in October 2026 (see full year).
Return flights
| 20 Oct - 28 Oct | Air Canada | ||
| 14 Oct - 28 Oct | Air Canada | ||
| 04 Oct - 17 Oct | Air Canada | ||
| 09 Oct - 16 Oct | Brussels Airlines |
Also check the deals for one-way flights from Denver to Madrid in October.
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